Ventilator.



I E STATES ATENT ERASTUS W. WOODS, OF CHICAGO, ILLINOIS, ASSIGNOR TO THE WOODS AIR INFUSER- 00., OF CHICAGO, ILLINOIS, A CORPORATION OF ILLINOIS.

VENTILATOR.

Specification of Letters Patent.

Patented Dec. 27, 1910.

Application filed April 21, 1910. Serial No. 556,697.

To all whom it may concern:

Be it known that I, ERASTUS WV. WOODS, a citizen of the United States, residing at Chicago, in the county of Cook and State of Illinois, have invented certain new and useful Improvements in Ventilators, of which the following is a specification.

My invention relates to new and useful improvements in ventilators, and the objects of my improvements are, first, to provide a foraminous air-infuser or air-intake adapted to prevent what is termed siphoning of the heated air from the interior of a structure when wind velocity is present outside. Second, the provision of a construction in which the incoming currents of air will oppose each other within the air-intake and avoid an unimpeded passage of the air through the intake without entering the building to be ventilated; and, third, to afford a construction of air-intake adapted to remain open at all times and in which the wind will be caused to enter the intake at variant angles regardless of the direction from which the air in motion proceeds.

To these and other ends my invention consists in the novel features, and in the construction, combination and arrangement of parts hereinafter more fully described, and

particularly pointed out in claims follow-.

ing the description, reference being had to the accompanying drawings forming a part of this specification, wherein Figure 1 is a perspective view of my invention. Fig. 2 is a longitudinal section online 22 of Fig. 3. Fig. 3 is a transverse section on line 38 of Fig. 2.

Like reference numerals indicate corresponding parts throughout the several views.

It will be understood my invention is connected with the outer end of an air conduit for supplying atmospheric air to a structure to be ventilated.

My invention may be described generally as composed of a foraminous cylinder or element, and an inclosing shell or member preferably concentrically disposed with a liberal air-space therebetween, an outer end plate and an inner end collar-plate, the latter eXtending abOVe the horizontal plane of the shell, and a top plate weather shield and an end plate or support for the shield. The end plate and the upper extension of the collar in conjunction with the top or shield and a portion of the exterior of the shell form a rapidly decreasing air chute from either side which terminates at the open up per port in the shell.

One embodiment of my invention is described as follows:

Referring to the drawings by reference numerals, 4t designates an outside wall of a building, and 5 denotes an air conduit leading from the air-intake to the interior of the structure to be ventilated as in the case of furnace-heating of the same.

The numeral 6, represents a foraminous element or cylinder, preferably formed of wire fabric, and 7, denotes an inclosing member or shell concentrically disposed with reference to the foraminous element with an air space 10 t-herebetween. The imperforate end piece or closure plate 8, shuts the outer end of both the cylinder and the shell and the air space. The collar or inner end plate, 9, of the shell extends upwardly and forms a rest or support for the weather shield or cover, 11, and the outer end rest or plate, 21, from three sides of an air chute with its open outer end, 18. Deflectionflanges 12' and 13 are fixed in any well known or desired manner to the outer surface of the cylinder, 6, preferably one above and one below the cylinder and longitudinally thereof. The shell, 7, has upper and lower ports, 14 and 15, therethrough and positioned adjacent to the flanges, 12 and 13, and lateral ports, 16, as shown in the drawings. The portion 17, between the ports in the shell offer resistance to the air and change the direction by reason of the convex surface thereof.

The fabric cylinder is formed by rolling a piece of woven wire of suitable dimensions and securing the ends together. One end of the cylinder is fixed to one surface of the outer end closure plate as shown or in any suitable manner. The inner end of the cylinder is bound by a sheet metal strip, 20. The screws, 19, serve to fix the collar, 9, to the wall. It will be understood that the inner end of the cylinder, 6, is of a sufficient cross section to be inserted snugly in the outer end of the conduit, 5. The shell and other parts, excepting the fabric cylinder, are preferably made of sheet metal and in a manner commonly understood.

It has been found in practice with commonly used ventilating and air supply devices, that a wind of sufficient velocity will siphon the heated air out backward through the unprotected air supply or air intake, and it is one object of my present invention to overcome such objection. Heretofore the air supply would be impaired and fuel wasted by an unfavorable outside air current.

In use and operation when any means for heat increases the temperature of the air within a room, a flow of air from without will be established and maintained until the outside and inside temperatures are equal. Air in motion will enter the cylinder through the upper port, 14, and proceed in a direction at an angle to air in motion entering through the lateral ports, 16, and thus prevent a passage of air through the air-intake and the consequent withdrawal of air from the building. The air conduit should remain open at all times, and should be proportioned to the space to be ventilated.

It is apparent that variations in form, proportions, and minor details of myiinvention may be resorted to without departing from the spirit and scope of my invention, and hence I consider myself entitled to all such variations and changes as may lie within my claims.

Having thus fully described my invention, what I claim as new, and desire to secure by Letters-Patent is 1. In a ventilator, an air-intake comprising a foraminous element and an inclosing member therefor disposed with air space therebetween, the foraminous element having upper and lower deflection-flanges fixed to the outer surface thereof, the inclosing member having upper and lower ports therethrough adjacent to the flanges, and an imperforate end plate closing the outer ends of both the foraminous element and the inclosing member, substantially as shown and described.

2. In a ventilator, an air-intake comprising a foraminous cylinder and an inclosing shell therefor, concentrically disposed with air-space, therebetween, the cylinder having upper and lower deflection-flanges longitudinally fixed to the outer surface thereof, the shell having upper and lower ports therethrough adjacent to the flanges, an imperforate end plate closing the outer ends of both the cylinder and the shell, and a weather-shield substantially as shown and described.

3. In a ventilator, an air-intake comprising a foraminous cylinder and an inclosing shell therefor, concentrically disposed with air-space therebetween, the cylinder having upper and lower end deflection-flanges longitudinally fixed to the outer surface thereof, the shell having upper and lower ports therethrough adjacent the flanges, an imperforate end plate closing the outer ends of both the cylinder and the shell, an inner end collar and an outer end plate both extending above the plane of the shell, and a weather shield supported thereby and in conjunction with a portion of the exterior of the shell forming an air chute terminating at the upper port in the shell, substantially as shown and described.

In testimony whereof I aflix my signature in presence of two witnesses.

ERASTUS W. WOODS.

Witnesses:

S. ELVA KELLooe, WVALTER WAGNER. 

